update TOC to not be absolute

assets/css/custom.css

@@ -21,25 +21,20 @@ main .container {
 
 @media (min-width: 1280px) {
     .single-post-wrapper {
-        display: block; /* Turns off Flexbox completely */
+        display: flex; 
+        flex-direction: row;
+        gap: 2rem;
     }
 
     #main-content {
-        /* Standard block behavior: automatically centers prose within wrapper */
-        display: block; 
+        flex-grow: 1;
+        min-width: 0;
     }
 
     #sidebar-toc {
-        /* Removes the TOC from document flow entirely */
-        position: absolute;
-        top: 0;
-        
-        /* Math: Center of wrapper (50%) + half the prose width (32.5ch) + 2rem gap */
-        left: calc(50% + 32.5ch + 2rem);
-        
-        /* The aside needs to be exactly 100% height of the wrapper for sticky to work */
-        height: 100%; 
-        width: 256px;
+        position: static;
+        flex: 0 0 256px;
+        height: auto;
     }
 }